A new extensive library of PHOENIX stellar atmospheres and synthetic spectra

Tim-Oliver Husser¹, Sebastian Wende – von Berg¹, Stefan Dreizler¹, Derek Homeier¹², Ansgar Reiners¹, T. Barman³, and Peter H. Hauschildt⁴

¹Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
²CRAL, UMR 5574, CNRS, Université de Lyon, École Normale Supérieure de Lyon, 46 Allée d’Italie, F-69364 Lyon Cedex 07, France
³Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ, 86001, USA
⁴Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany

Aims. We present a new library of high-resolution synthetic spectra based on the stellar atmosphere code PHOENIX that can be used for a wide range of applications of spectral analysis and stellar parameter synthesis.
Methods. The spherical mode of PHOENIX was used to create model atmospheres and to derive detailed synthetic stellar spectra from them. We present a new self-consistent way of describing micro-turbulence for our model atmospheres.
Results. The synthetic spectra cover the wavelength range from 500Å to 5.5μm with resolutions of R = 500 000 in the optical and near IR, R = 100 000 in the IR and λ=0.1Å in the UV. The parameter space covers 2 300 K < Teff < 8 000 K, 0.0 < log(g) < +6.0, -4.0 < [Fe/H] < +1.0 and -0.2 < [α/M] < +1.2. The library is a work in progress and going to be extended to at least Teff = 25 000 K.

ADS: 2013A&A…553A…6H
arXiv: arXiv:1303.5632

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